Bullet Connector Size and Wire Length for Optronics ThinLine Mini LED Light MCL-91AK

Updated 10/16/2026 | Published 10/15/2026

Products Featured in This Question

ThinLine Mini LED Side Marker or Clearance Light w/ Bracket - Submersible - 3 DIodes - Amber Lens

(224)

$13.68

Plug - Single Wire with 12" Lead for A91 and AL91 Series Trailer Clearance, Side Marker Lights

(110)

$3.36

Question:

What size is the bullet connector and the wire? Thanks

asked by: William T

Expert Reply:

Welcome back Bill. The Optronics ThinLine Mini LED Light # MCL-91AK uses a 0.156" bullet connector and a 12" wire lead. The replacement wire is # A91LW if you need one.

Are you replacing an existing light or installing new ones?

expert reply by: Robin H

MCL-91AK
(click to enlarge)

William T.

10/16/2026

Replacing a 23 year old broken light with incandescent bulb. It will will have pos and neg wires I need to fit with the bullet connectors. Thanks

Robin H.

10/16/2026

@WilliamT if you can't find an exact match for your existing connector, you can cut it off and use a heat shrink butt connector to attach the positive wire to the # A91LW lead. Then ground the negative wire to a clean, bare metal surface on the trailer frame. That way you won't have to worry about matching the old connector size.